Chickenpox can go to school in about 2~3 weeks. Chickenpox is not contagious until the scabs have completely formed and fallen off. Due to individual differences, the time for complete healing is not the same for everyone, usually 2~3 weeks for complete recovery, and medications (such as glycerine lotion and acyclovir) need to be used under the guidance of a professional doctor. Chickenpox can cause various symptoms such as blisters on the skin, fever and sore throat. The exudate from chickenpox when you have chickenpox contains the virus, which is contagious and requires active isolation of the patient to prevent transmission. Chickenpox usually causes significant itching, need to go to the regular hospital, under the guidance of a professional doctor to use anti-itching drugs (such as glycerine lotion), and in severe cases may require the use of antiviral drugs (such as acyclovir, etc.).